ABSTRACT

The problems of generator-motors are their time varying and non-linear dynamics because most motor speed control designs and techniques are limited with internal problem of how to properly control the dynamics of the motor drives and its response to applied loads. The research has presented the dynamic modeling of generator- motor control for speed control. Generator-Motor data and Matlab software were used for the study. Ward-Leonard system speed control motor was implemented using different motor parameters in Simulink. It was seen that the steady speed observed when PID was incorporated is at 240rad/s, while that when PI was incorporated was seen at 250rad/s. But when simulated without controller, the steady state was seen at 260rad/s and the critical point was seen at 1.5 seconds, which correspond to the peak of the oscillations. Also simulating the armature current using PI and PID, it was seen that oscillation start at 1.3 seconds and ended at 5.5 seconds. The steady speed was seen to start from 6.0 seconds to 10.0 seconds. From the graph, the peak of the oscillation for PI was seen to reach at 18 rad/s, while that of PID was seen to reach 12 rad/s, and that without was seen to reach 24rad/s. The research concludes that the overall behavior and stability of the entire control system is influenced by the dynamic characteristics of the system, thus an understanding of the steady state characteristics of a system became an important aspect in determining the behavior and stability of such system, and recommend that future researchers should use Fuzzy and Artificial Neural Networks to examine the speed behavior of the generator- motor.